Pre-1992 TLC charge, rule text not online
This code comes from the TLC's rule numbering used before mid-1992. The text of that rule is not available online (not on nyc.gov or in web archives), so we cannot say exactly what it covered. OATH's public records show it on 1 charge, with a violation date in Jun 1992. Written by TLC inspectors. It could also be old rule 2-24(a)(1) (driver's name on the taxi rate card) typed without the first hyphen, but the date fits the older numbering better. Your summons or hearing decision describes the specific conduct.
TLC rule numbering used before mid-1992 (text not available)TLC – Old Rule Book Chapters (nyc.gov)